2758
2768
find_ghosts=find_ghosts).get_keys()
2759
2769
except errors.NoSuchRevision:
2760
2770
raise errors.InstallFailed([revision_id])
2761
2773
packs = self.source._pack_collection.all_packs()
2762
2774
pack = Packer(self.target._pack_collection, packs, '.fetch',